Are they all right? If not please tell me what the answers are. Thanks! (Math)
2 answers:
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The answer is Option B
Step-by-step explanation:
Step 1: Group the given cubic polynomial into two sections.
So polynomial can be grouped as
Step 2:Find what's the common in each section.
In section the come term is
In section (8x + 48) the come term is 8
Step 3:Factor the commonalities out of the two terms.
Factoring out from the first section
, we get
Factoring out 8 from the second section(8x + 48) , we will get 8(x + 6).
Step 4: Combine the factors together for terms contains the same factor,
Combining we get,
Answer:
The cost of fertilizing the field is
Step-by-step explanation:
we know that
The area of the figure is equal to the area of the rectangle plus the area of a complete circle (two semicircles)
Step 1
Find the area of the rectangle
The area of rectangle is equal to
where
L is the length side of rectangle
w is the width side of the rectangle
In this problem we have
substitute
Step 2
Find the area of the circle
The area of the circle is equal to
where
r is the radius of the circle
In this problem we have
substitute
Step 3
Find the area of the figure
Adds the area of rectangle and the area of the circle
Step 4
Find the cost
Multiply the total area by
so
